285255697 has 2 divisors, whose sum is σ = 285255698. Its totient is φ = 285255696.

The previous prime is 285255673. The next prime is 285255701. The reversal of 285255697 is 796552582.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212255761 + 72999936 = 14569^2 + 8544^2 .

It is a cyclic number.

It is not a de Polignac number, because 285255697 - 2¹¹ = 285253649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285255697.

It is not a weakly prime, because it can be changed into another prime (285255647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142627848 + 142627849.

It is an arithmetic number, because the mean of its divisors is an integer number (142627849).

Almost surely, 2^285255697 is an apocalyptic number.

It is an amenable number.

285255697 is a deficient number, since it is larger than the sum of its proper divisors (1).

285255697 is an equidigital number, since it uses as much as digits as its factorization.

285255697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 49.

The square root of 285255697 is about 16889.5144098343. The cubic root of 285255697 is about 658.2811849665.

The spelling of 285255697 in words is "two hundred eighty-five million, two hundred fifty-five thousand, six hundred ninety-seven".